Tenoning-bit.



No. 631,344. Patented Aug. 22, |899. c. TULLE.

TENONING BIT.

(Application led May 8, 1899.)

kNo Model.) 2 Sheets-Sheet Iz TN: 40mila Ptrsns ca. PHoTLITNo.. wnnmm'cm. n. c.

No. 63|,344. Patented Aug. 22,1899. c. TULLE.

TENONING BIT.

(Application filed May 8, 1899.) (No Model.) 2 Sheets-Sheet 2.

W/TNESSES y NVENTOH" UNITED STATES PATENT OFFICE..

CHARLES TOLLE, OF GODFREY, ILLINOIS, ASSIGNOR OF ONE-HALF TO HENRY TOLLE, OF DENVER, COLORADO.

TENONING-BIT.

SPECIFICATION forming part of Letters Patent No. 631,344, dated August 22, 1899.

Application filed May 8,1899. Serial No. 715,962. (No model.)

To all whom t may concern:

Be it known that I, CHARLES TOLLE, a citizen of the United States, residing at Godfrey, Madison county, Illinois, have inventedcer- .tain new' and useful Improvements in Tenoning-Bits, of which the following is a specification.

. The objects of the invention are to provide a simple and effective bit for tenoning the ends of spokes; to form the bit-stock in two sections adjustable toward and from each other to receive the ends of different sizes of spokes; to connect the shank or tang of the bit adj ustably to the stock, so that it may always be properly centered with respect thereto; to provide an adjusting mechanism which will not only correctly and evenly adjust the movable member of the bit-stock, but hold it firmly in its adjusted position, and finally to provide the stock with a socket adapted to contain the tenonin g knife or blade and having adjusting-screws for setting and holding the knife or blade in proper relation to the bore of the bit-stock. These objects I accomplish by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a perspective View of my improved tenoning-bit. tical sectional view. Figf is a bottom plan View. Fig. 4 is a transverse section on line a: Fig. 2. Fig. 5 is a detail sectional View of the cutting-tool and its socket or holder, and Fig. 6 is a plan View of the wrench used in adjusting the tenoning-bit.

A designates the tubular stock, open at its lower spoke-receiving end and having one of its longitudinal sides A' adjustable in and out, so as to vary the size of the bore in order to accommodate the ends of different-sized' spokes. This adjustable side or member A is provided with sockets a a on its outer side, in which sockets are swiveled the ends of the transverse adjusting-screws B B, mounted in threaded openings in the cross-bars or yokes Fig. 2 is a central verof thestock A at the inner sides thereof.l

This top plate a is provided with a slot d2, in which the shank or tang D of the bit-stock is adjustably mounted. This adjustment is effectedby passing the lower threaded end of the shank D through the slot, with its shoulder d resting on the upper side of the plate a or on an interposed washer, and a nut d on the shank engages the under side of the top plate and binds the shank firmly in place. By this means the shank D maybe adjusted so that it will always be in longitudinal alinenient with the center of the bore of the hollow stock, which of course varies with the adjustment of the side piece A. the side piece A isprovided with a notch c3 to receive a portion of the nut, and the opposed side of the stock A is provided at its upper edge with a similar notch a4 for a like purpose. Owing to these notches the nut will not interfere with the adjustment of side piece A inwardly as far as may be desired. The stock A is further provided with a longitudinal slot a5, in which slides the neck c of a gage E within the stock. The gage is adjusted by means of a screw E', which enters a threaded opening in the neck c and -is pro-4 vided with a shoulder e', which bears on the outer face Vof the stock.

The working or lower end of the stock is provided with a horizontal faceplate,one half A4, of which is formed on the lower end of the stock A outside the bore thereof and the other half A5 of which is formed on the lower end of the adjustable side piece A. The lower opposite corners of the stock A and plate A are connected by the two pairs of toggle-levers F, so that when the side A is adjusted by its Screws B B it will not tilt or incline, but will move in perfect parallelism to the opposed inner face of the stock A.

The face-plate section A4 is provided with a throat or knife-opening g, the inner side of which intersects the bore of the stock, and an upwardly and outwardly inclined tubular knife-holder Gr forms an integral part of this face-plate section A4.

The top and bottom walls of the knife or The upper edge of j IOO cutter holder G are provided with longitudinal slots to accommodate the set-screw H of the knife or cutter ll. By loosening this screw the knife or cutter may be adjusted longitudinally, and lateral adjustment of the knife is effected by set-screws 7L 7i, which project through apertures in the outer wall of the knife-holder. Thus the exact angle and amount of cutting-surface of the knife to cross the bore of the stock may be determined and so the desired depth of eut eifected.

All of the above-described screws are provided with eyes, so that they may be turned by the pointed end of tool C, and the other end of the tool is formed as a wrench to fit the squared shank and loosen it for adjustment.

The improved bit may be used with a handbrace or in a lathe, as may be convenient. A spoke being held stationary, the bore of the stock is properly adjusted to receive the end to be tenoned, the cutter or knife is set for the proper depth of eut, and the gage is set for the length of tenon to be formed. The bit-stock is then passed upon the end of the spoke and rotated till the tenon is formed, the chips or shavings passing out through the throat g.

l. The combination with a tubular stock provided with means for adjusting its bore for different-sized spokes, of a shank adjustable laterally on the stock into alinement with the center of the bore, and a cutter or knife holder.

2. A tenoning-bit comprising a tubular stock, provided with an adjustable side piece to adjust its bore, means for effecting such adjustment, a shank adjustable laterally on the stock into alinement with the center of the bore, and a knife or cutter holder at the opposite end of the stock.

3. A tenoning-bit provided with a tubular stock having an adjustable side piece to vary the size of its bore, a shank adjustable on one end of the stock, transverse face-plate sections at the other ends of the stock and its adjustable side piece, and a knife-holder extending from the face-plate section of the stock.

et. A tenoning-bit comprising, a tubular stock having an adjustable shank and an adj ustable side piece to Vary its bore, toggles connecting the opposite outer corners of the stock and its adjustable side piece, set-screws for adj usting'said side piece, and cross-pieces in which said screws are mounted.

5. A tenoning-bit comprising, a tubular, lon gitudinally-slotted stock provided with an adjustable side piece to Vary its bore, a gage adjustable along said slot; set-screws for adjusting said side piece in and out, cross-pieces in which said screws are mounted, an adjustable shank at one end of the stock and a k nite-holder at the opposite end,substantially as set fort-h.

C. A tenoning-bit comprising, a tubular stock having an adjustable side piece to vary its bore, a slotted -top plate on the upper end of said side piece and Working in grooves in the stock, a shank mounted in said top-plate slot and provided thereunder with an adjusting-nut, and a knife-holder at the opposite end ofthe stock, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES TOLLE.

IVitnesses:

yHENRY HOHMANN, JOHN M. PFEIFFENBERGER. 

